Small molecule activation and biomimetic catalysis
Paper
Completely Recyclable Monomers and Polycarbonate: Approach to Sustainable Polymers
Release Time:2019-03-12
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Journal Article
First Author:
Liu, Ye
Correspondence Author:
Liu, Y; Lu, XB (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China.
Co-author:
Lu, Xiao-Bing,Zhou, Hui,Guo, Jia-Zhi,Ren, Wei-Min
Date of Publication:
2017-04-18
Journal:
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Included Journals:
PubMed、EI、SCIE
Document Type:
J
Volume:
56
Issue:
17
Page Number:
4862-4866
ISSN:
1433-7851
Key Words:
carbon dioxide; depolymerization; polycarbonates; recyclable polymers;
temperature switch
Abstract:
It is of great significance to depolymerize used or waste polymers to recover the starting monomers suitable for repolymerization reactions that reform recycled materials no different from the virgin polymer. Herein, we report a novel recyclable plastic: degradable polycarbonate synthesized by dinuclear chromium-complex-mediated copolymerization of CO2 with 1-benzyloxycarbonyl-3,4-epoxy pyrrolidine, a meso-epoxide. Notably, the novel polycarbonate with more than 99% carbonate linkages could be recycled back into the epoxide monomer in quantitative yield under mild reaction conditions. Remarkably, the copolymerization/ depolymerization processes can be achieved by the ON/OFF reversible temperature switch, and recycled several times without any change in the epoxide monomer and copolymer. These characteristics accord well with the concept of perfectly sustainable polymers.